% Tetrix -- Tetris for the Atari ST
% Quentin Neill
% Tue Jan 15 23:05:55 PST 2008

#Tetrix

When <cite>Quentin Neill</cite> posted his **tetrix** game 
[to Usenet](tetrix.shar)
in 1989, I grabbed a copy so I could port it to the Atari ST.
When I switched to MS-DOS, I ported it there, then I ported it
further on to Linux when Pell was switched over to Unix.  But
this code is the original Atari ST port.
</P>

###[the Readme from the Usenet post](README)
> `This is a Unix SysV implementation of a game that appeared on
> comp.binaries.amiga a while ago. The author, Quentin Neill,
> saw it on an amiga here at work, and ported it to curses 
> (on his own time, of course ;-)  ).
>
> `I'm not too sure about the history of tetrix.  Someone 
> said that the game originated in Russia, and that it is quite old.
> We became enthralled with the game on an Amiga, almost to the point
> of addiction.  That version had some documentation, but I never had
> the chance to read it - I only played.  I conidered writing a version
> in machine language for my Franklin junker at home, but settled on a
> C implementation for unix machines.
>
> `The object of the game is to keep the board clear for as long as
> possible.  Pieces consisting of four blocks (hence the name TETRix) in the
> seven possible arrangements are sent down one at a time.  The player's
> job is to find the best fit for the piece in the pile of blocks that have
> already fallen.  He can rotate each piece and move it from side to side.
> If the piece just played causes a complete row of blocks, that row is 
> erased and all blocks above it move down one row.  Points are awarded for
> completed rows - more for rows higher up on the board.  A piece may
> be dropped from a height for additional points when the player feels it 
> is oriented correctly.  The game is over when no more pieces can be formed
> at the top of the board.
>
> `There is one variable INIT_PAUSE in tet.c that compensates for
> different machine speeds.  Set this higher if tetrix screams, and the 
> time between each piece's movement will lengthen.  Set it lower if
> it crawls along too slowly.  On a Tower 32/800 with about 45 users on a
> busy day, we do well with the value set at about 300.  On a Tower 32/200
> with one user, the value was set at 1500.
>
>	Good luck!                                      Quentin Neill

###Source Code

* [README](README 'The original readme')
* [tetrix.shar](tetrix.shar 'The original posting to Usenet')
* [advancep.c](advancep.c)
* [curses.h](curses.h)
* [makefile](makefile)
* [movel.c](movel.c)
* [mover.c](mover.c)
* [newp.c](newp.c)
* [rotate.c](rotate.c)
* [tet.c](tet.c)
* [tet.h](tet.h)